Read the following statements and choose the follwoing option: 1. Movement of water by diffusion is called passive transport 2. Singer and Nicolson proposed the fluid mosaic model. 3.One of the most important functions of the plasma membrane is the transport of the molecules across it. 4. Movement of water by diffusion is called osmosis. 5. In human beings, the membrane of the erythrocyte has approximately 52 per cen